<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		 <!--[if lt IE 9]>
    <script src="../js/jquery-1.11.3.js"></script>
    
<![endif]-->
<!--[if gte IE 9]><!-->
    <script src="../js/jquery-3.1.1.js"></script>
<!--<![endif]-->
<script type="text/javascript">
$(function(){				
					$( ".tt" ).css("background-color","yellow");
					$( "#gg" ).css("background-color","#008080");
					$( "p" ).css("background-color","#00FF00");
			});
</script>
	</head>
	<body>
<div  id="gg">这是隐藏的 div 元素。</div>
<div  class="tt">这是隐藏的 div 元素。</div>
<p>这是隐藏的 div 元素。</p>

	</body>
</html>
